slackbuilds/libraries/zope.proxy

zope.proxy (Generic Transparent Proxies)

Proxies are special objects which serve as mostly-transparent
wrappers around another object, intervening in the apparent behavior
of the wrapped object only when necessary to apply the policy (e.g.,
access checking, location brokering, etc.) for which the proxy is
responsible.

This requires zope.interface.

To build, this requires pysetuptools.